<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>内部css</title>
</head>

<body>
    <style>
        body {
            background-color: linen;
        }

        h1 {
            color: maroon;
            margin-left: 40px;
        }
    </style>
    <h1>这是一个标题</h1>
    <p>这是一个段落。</p>
</body>

</html>